Seiko 9R31 Movement Details
Seiko caliber 9R31 is a high grade spring drive (hand winding) watch movement produced from around 2019.
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Sub-brands: | Grand Seiko |
Power reserve: | 72 hours |
Accuracy: | ±15 seconds/month |
Day / date? | No |
GMT / world time? | No |
Chronograph? | No |
Rate: | 32,768 Hz |
Number of jewels: | 30 |
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